EP3764718B1 - Verfahren und vorrichtung zur unterstützung von verwaltungsaktionen für ultrahohen durchsatz in der drahtlosen kommunikation - Google Patents

Verfahren und vorrichtung zur unterstützung von verwaltungsaktionen für ultrahohen durchsatz in der drahtlosen kommunikation Download PDF

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Publication number
EP3764718B1
EP3764718B1 EP20192533.6A EP20192533A EP3764718B1 EP 3764718 B1 EP3764718 B1 EP 3764718B1 EP 20192533 A EP20192533 A EP 20192533A EP 3764718 B1 EP3764718 B1 EP 3764718B1
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Prior art keywords
vht
frame
channel
mhz
field
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French (fr)
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EP3764718A1 (de
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Sudheer A. Grandhi
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InterDigital Patent Holdings Inc
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InterDigital Patent Holdings Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0623—Auxiliary parameters, e.g. power control [PCB] or not acknowledged commands [NACK], used as feedback information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0634—Antenna weights or vector/matrix coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0658—Feedback reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0891—Space-time diversity
    • H04B7/0897—Space-time diversity using beamforming per multi-path, e.g. to cope with different directions of arrival [DOA] at different multi-paths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the invention relates to a method and an AP for supporting supporting management actions in Very High Throughput, VHT, communications.
  • a WLAN infrastructure basic service set (BSS) mode may have an Access Point (AP) for the BSS and one or more stations (STAs) associated with the AP.
  • the AP typically may have access to, or interface with, a distribution system (DS) or another type of wired/wireless network that may carry traffic in and out of the BSS.
  • Traffic to STAs that originates from outside the BSS may arrive through the AP and may be delivered to the STAs.
  • Traffic originating from STAs to destinations outside the BSS may be sent to the AP to be delivered to the respective destinations.
  • Traffic between STAs within the BSS may also be sent to through the AP where the source STA sends traffic to the AP and the AP delivers the traffic to the destination STA.
  • Such traffic between STAs within a BSS may be referred to as peer-to-peer traffic.
  • Such peer-to-peer traffic may also be sent directly between the source and destination STAs with a direct link setup (DLS) using an 802.11e direct link setup (DLS) or an 802.11z tunneled DLS.
  • a WLAN in Independent BSS mode may not have an AP and STAs communicating directly with each other.
  • the earliest version of the 802.11 standard provided a data rate of 1 Mbps.
  • a subsequent amendment, namely 802.11b, provided a physical layer data rate of 11 Mbps.
  • OFDM orthogonal frequency division multiplexing
  • the data rates supported were increased to 54 Mbps at the PHY layer.
  • the 802.11n amendment increased the data rates supported to 100 Mbps on top of the MAC layer. It would be desirable to have a method and apparatus configured to support data rates greater than 100 Mbps.
  • US 2007/230373 discloses schemes for training multiple input, multiple output channels in wireless networks. Multiple stations in a network may share a single channel sounding packet to develop corresponding beamforming matrices or channel state information.
  • WO 2007/040564 discloses a method which selects antennas in a multiple input multiple output wireless local area network including multiple stations, and each station including a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets. A frame including a high throughput control field is sent to initiate a selecting of antennas, and a subset of antennas is selected according to the channel matrix.
  • a method and apparatus may be used to support management actions for Very High Throughput (VHT) in wireless communications.
  • An STA or an AP may transmit a management action frame.
  • the management action frame may include a field for supporting one or more VHT management functions.
  • the one or more VHT management functions may be related to a multi-channel non-contiguous spectrum operation.
  • a STA or an AP may perform an action based on the received management action frame.
  • the receiving STA or AP may transmit an acknowledgement (ACK) based on a category or a subtype indicated in the management action frame.
  • ACK acknowledgement
  • FIG. 1A is a diagram of an example communications system 100 in which one or more disclosed embodiments may be implemented.
  • the communications system 100 may be a multiple access system that provides content, such as voice, data, video, messaging, broadcast, etc., to multiple wireless users.
  • the communications system 100 may enable multiple wireless users to access such content through the sharing of system resources, including wireless bandwidth.
  • the communications systems 100 may employ one or more channel access methods, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), single-carrier FDMA (SC-FDMA), and the like.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal FDMA
  • SC-FDMA single-carrier FDMA
  • the communications system 100 may include wireless transmit/receive units (WTRUs) 102a, 102b, 102c, 102d, a radio access network (RAN) 104, a core network 106, a public switched telephone network (PSTN) 108, the Internet 110, and other networks 112, though it will be appreciated that the disclosed embodiments contemplate any number of WTRUs, base stations, networks, and/or network elements.
  • WTRUs 102a, 102b, 102c, 102d may be any type of device configured to operate and/or communicate in a wireless environment.
  • the WTRUs 102a, 102b, 102c, 102d may be configured to transmit and/or receive wireless signals and may include user equipment (UE), a mobile station, a fixed or mobile subscriber unit, a pager, a cellular telephone, a personal digital assistant (PDA), a smartphone, a laptop, a netbook, a personal computer, a wireless sensor, consumer electronics, and the like.
  • UE user equipment
  • PDA personal digital assistant
  • smartphone a laptop
  • netbook a personal computer
  • a wireless sensor consumer electronics, and the like.
  • the communications systems 100 may also include a base station 114a and a base station 114b.
  • Each of the base stations 114a, 114b may be any type of device configured to wirelessly interface with at least one of the WTRUs 102a, 102b, 102c, 102d to facilitate access to one or more communication networks, such as the core network 106, the Internet 110, and/or the networks 112.
  • the base stations 114a, 114b may be a base transceiver station (BTS), a Node-B, an eNode B, a Home Node B, a Home eNode B, a site controller, an access point (AP), a wireless router, and the like. While the base stations 114a, 114b are each depicted as a single element, it will be appreciated that the base stations 114a, 114b may include any number of interconnected base stations and/or network elements.
  • the base station 114a may be part of the RAN 104, which may also include other base stations and/or network elements (not shown), such as a base station controller (BSC), a radio network controller (RNC), relay nodes, etc.
  • BSC base station controller
  • RNC radio network controller
  • the base station 114a and/or the base station 114b may be configured to transmit and/or receive wireless signals within a particular geographic region, which may be referred to as a cell (not shown).
  • the cell may further be divided into cell sectors.
  • the cell associated with the base station 114a may be divided into three sectors.
  • the base station 114a may include three transceivers, i.e., one for each sector of the cell.
  • the base station 114a may employ multiple-input multiple output (MIMO) technology and, therefore, may utilize multiple transceivers for each sector of the cell.
  • MIMO multiple-input multiple output
  • the base stations 114a, 114b may communicate with one or more of the WTRUs 102a, 102b, 102c, 102d over an air interface 116, which may be any suitable wireless communication link (e.g., radio frequency (RF), microwave, infrared (IR), ultraviolet (UV), visible light, etc.).
  • the air interface 116 may be established using any suitable radio access technology (RAT).
  • RAT radio access technology
  • the communications system 100 may be a multiple access system and may employ one or more channel access schemes, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and the like.
  • the base station 114a in the RAN 104 and the WTRUs 102a, 102b, 102c may implement a radio technology such as Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (UTRA), which may establish the air interface 116 using wideband CDMA (WCDMA).
  • WCDMA may include communication protocols such as High-Speed Packet Access (HSPA) and/or Evolved HSPA (HSPA+).
  • HSPA may include High-Speed Downlink Packet Access (HSDPA) and/or High-Speed Uplink Packet Access (HSUPA).
  • the base station 114a and the WTRUs 102a, 102b, 102c may implement a radio technology such as Evolved UMTS Terrestrial Radio Access (E-UTRA), which may establish the air interface 116 using Long Term Evolution (LTE) and/or LTE-Advanced (LTE-A).
  • E-UTRA Evolved UMTS Terrestrial Radio Access
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • the base station 114a and the WTRUs 102a, 102b, 102c may implement radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.16 (i.e., Worldwide Interoperability for Microwave Access (WiMAX)), CDMA2000, CDMA2000 1X, CDMA2000 EV-DO, Interim Standard 2000 (IS-2000), Interim Standard 95 (IS-95), Interim Standard 856 (IS-856), Global System for Mobile communications (GSM), Enhanced Data rates for GSM Evolution (EDGE), GSM EDGE (GERAN), and the like.
  • IEEE Institute of Electrical and Electronics Engineers
  • WiMAX Worldwide Interoperability for Microwave Access
  • CDMA2000, CDMA2000 1X, CDMA2000 EV-DO Code Division Multiple Access 2000
  • IS-95 Interim Standard 95
  • IS-856 Interim Standard 856
  • GSM Global System for Mobile communications
  • GSM Global System for Mobile communications
  • EDGE Enhanced Data rates for GSM Evolution
  • GERAN GSM ED
  • the base station 114b in FIG. 1A may be a wireless router, Home Node B, Home eNode B, or access point, for example, and may utilize any suitable RAT for facilitating wireless connectivity in a localized area, such as a place of business, a home, a vehicle, a campus, and the like.
  • the base station 114b and the WTRUs 102c, 102d may implement a radio technology such as IEEE 802.11 to establish a wireless local area network (WLAN).
  • the base station 114b and the WTRUs 102c, 102d may implement a radio technology such as IEEE 802.15 to establish a wireless personal area network (WPAN).
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • the base station 114b and the WTRUs 102c, 102d may utilize a cellular-based RAT (e.g., WCDMA, CDMA2000, GSM, LTE, LTE-A, etc.) to establish a picocell or femtocell.
  • a cellular-based RAT e.g., WCDMA, CDMA2000, GSM, LTE, LTE-A, etc.
  • the base station 114b may have a direct connection to the Internet 110.
  • the base station 114b may not be required to access the Internet 110 via the core network 106.
  • the RAN 104 may be in communication with the core network 106, which may be any type of network configured to provide voice, data, applications, and/or voice over internet protocol (VoIP) services to one or more of the WTRUs 102a, 102b, 102c, 102d.
  • the core network 106 may provide call control, billing services, mobile location-based services, pre-paid calling, Internet connectivity, video distribution, etc., and/or perform high-level security functions, such as user authentication.
  • the RAN 104 and/or the core network 106 may be in direct or indirect communication with other RANs that employ the same RAT as the RAN 104 or a different RAT.
  • the core network 106 may also be in communication with another RAN (not shown) employing a GSM radio technology.
  • the core network 106 may also serve as a gateway for the WTRUs 102a, 102b, 102c, 102d to access the PSTN 108, the Internet 110, and/or other networks 112.
  • the PSTN 108 may include circuit-switched telephone networks that provide plain old telephone service (POTS).
  • POTS plain old telephone service
  • the Internet 110 may include a global system of interconnected computer networks and devices that use common communication protocols, such as the transmission control protocol (TCP), user datagram protocol (UDP) and the internet protocol (IP) in the TCP/IP internet protocol suite.
  • the networks 112 may include wired or wireless communications networks owned and/or operated by other service providers.
  • the networks 112 may include another core network connected to one or more RANs, which may employ the same RAT as the RAN 104 or a different RAT.
  • the WTRUs 102a, 102b, 102c, 102d in the communications system 100 may include multi-mode capabilities, i.e., the WTRUs 102a, 102b, 102c, 102d may include multiple transceivers for communicating with different wireless networks over different wireless links.
  • the WTRU 102c shown in FIG. 1A may be configured to communicate with the base station 114a, which may employ a cellular-based radio technology, and with the base station 114b, which may employ an IEEE 802 radio technology.
  • FIG. 1B is a system diagram of an example WTRU 102.
  • the WTRU 102 may include a processor 118, a transceiver 120, a transmit/receive element 122, a speaker/microphone 124, a keypad 126, a display/touchpad 128, non-removable memory 130, removable memory 132, a power source 134, a global positioning system (GPS) chipset 136, and other peripherals 138.
  • GPS global positioning system
  • the processor 118 may be a general purpose processor, a special purpose processor, a conventional processor, a digital signal processor (DSP), a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Array (FPGAs) circuits, any other type of integrated circuit (IC), a state machine, and the like.
  • the processor 118 may perform signal coding, data processing, power control, input/output processing, and/or any other functionality that enables the WTRU 102 to operate in a wireless environment.
  • the processor 118 may be coupled to the transceiver 120, which may be coupled to the transmit/receive element 122. While FIG. 1B depicts the processor 118 and the transceiver 120 as separate components, it will be appreciated that the processor 118 and the transceiver 120 may be integrated together in an electronic package or chip.
  • the transmit/receive element 122 may be configured to transmit signals to, or receive signals from, a base station (e.g., the base station 114a) over the air interface 116.
  • a base station e.g., the base station 114a
  • the transmit/receive element 122 may be an antenna configured to transmit and/or receive RF signals.
  • the transmit/receive element 122 may be an emitter/detector configured to transmit and/or receive IR, UV, or visible light signals, for example.
  • the transmit/receive element 122 may be configured to transmit and receive both RF and light signals. It will be appreciated that the transmit/receive element 122 may be configured to transmit and/or receive any combination of wireless signals.
  • the WTRU 102 may include any number of transmit/receive elements 122. More specifically, the WTRU 102 may employ MIMO technology. Thus, in one embodiment, the WTRU 102 may include two or more transmit/receive elements 122 (e.g., multiple antennas) for transmitting and receiving wireless signals over the air interface 116.
  • the transceiver 120 may be configured to modulate the signals that are to be transmitted by the transmit/receive element 122 and to demodulate the signals that are received by the transmit/receive element 122.
  • the WTRU 102 may have multi-mode capabilities.
  • the transceiver 120 may include multiple transceivers for enabling the WTRU 102 to communicate via multiple RATs, such as UTRA and IEEE 802.11, for example.
  • the processor 118 of the WTRU 102 may be coupled to, and may receive user input data from, the speaker/microphone 124, the keypad 126, and/or the display/touchpad 128 (e.g., a liquid crystal display (LCD) display unit or organic light-emitting diode (OLED) display unit).
  • the processor 118 may also output user data to the speaker/microphone 124, the keypad 126, and/or the display/touchpad 128.
  • the processor 118 may access information from, and store data in, any type of suitable memory, such as the non-removable memory 106 and/or the removable memory 132.
  • the non-removable memory 106 may include random-access memory (RAM), read-only memory (ROM), a hard disk, or any other type of memory storage device.
  • the removable memory 132 may include a subscriber identity module (SIM) card, a memory stick, a secure digital (SD) memory card, and the like.
  • SIM subscriber identity module
  • SD secure digital
  • the processor 118 may access information from, and store data in, memory that is not physically located on the WTRU 102, such as on a server or a home computer (not shown).
  • the processor 118 may receive power from the power source 134, and may be configured to distribute and/or control the power to the other components in the WTRU 102.
  • the power source 134 may be any suitable device for powering the WTRU 102.
  • the power source 134 may include one or more dry cell batteries (e.g., nickel-cadmium (NiCd), nickel-zinc (NiZn), nickel metal hydride (NiMH), lithium-ion (Li-ion), etc.), solar cells, fuel cells, and the like.
  • the processor 118 may also be coupled to the GPS chipset 136, which may be configured to provide location information (e.g., longitude and latitude) regarding the current location of the WTRU 102.
  • location information e.g., longitude and latitude
  • the WTRU 102 may receive location information over the air interface 116 from a base station (e.g., base stations 114a, 114b) and/or determine its location based on the timing of the signals being received from two or more nearby base stations. It will be appreciated that the WTRU 102 may acquire location information by way of any suitable location-determination method while remaining consistent with an embodiment.
  • the processor 118 may further be coupled to other peripherals 138, which may include one or more software and/or hardware modules that provide additional features, functionality and/or wired or wireless connectivity.
  • the peripherals 138 may include an accelerometer, an e-compass, a satellite transceiver, a digital camera (for photographs or video), a universal serial bus (USB) port, a vibration device, a television transceiver, a hands free headset, a Bluetooth ® module, a frequency modulated (FM) radio unit, a digital music player, a media player, a video game player module, an Internet browser, and the like.
  • the peripherals 138 may include an accelerometer, an e-compass, a satellite transceiver, a digital camera (for photographs or video), a universal serial bus (USB) port, a vibration device, a television transceiver, a hands free headset, a Bluetooth ® module, a frequency modulated (FM) radio unit, a digital music player, a media player, a video
  • FIG. 1C is a system diagram of the RAN 104 and the core network 106 according to an embodiment.
  • the RAN 104 may employ an E-UTRA radio technology to communicate with the WTRUs 102a, 102b, 102c over the air interface 116.
  • the RAN 104 may also be in communication with the core network 106.
  • the RAN 104 may include eNode-Bs 140a, 140b, 140c, though it will be appreciated that the RAN 104 may include any number of eNode-Bs while remaining consistent with an embodiment.
  • the eNode-Bs 140a, 140b, 140c may each include one or more transceivers for communicating with the WTRUs 102a, 102b, 102c over the air interface 116.
  • the eNode-Bs 140a, 140b, 140c may implement MIMO technology.
  • the eNode-B 140a for example, may use multiple antennas to transmit wireless signals to, and receive wireless signals from, the WTRU 102a.
  • Each of the eNode-Bs 140a, 140b, 140c may be associated with a particular cell (not shown) and may be configured to handle radio resource management decisions, handover decisions, scheduling of users in the uplink and/or downlink, and the like. As shown in FIG. 1C , the eNode-Bs 140a, 140b, 140c may communicate with one another over an X2 interface.
  • the core network 106 shown in FIG. 1C may include a mobility management gateway (MME) 142, a serving gateway 144, and a packet data network (PDN) gateway 146. While each of the foregoing elements are depicted as part of the core network 106, it will be appreciated that any one of these elements may be owned and/or operated by an entity other than the core network operator.
  • MME mobility management gateway
  • PDN packet data network
  • the MME 142 may be connected to each of the eNode-Bs 142a, 142b, 142c in the RAN 104 via an S1 interface and may serve as a control node.
  • the MME 142 may be responsible for authenticating users of the WTRUs 102a, 102b, 102c, bearer activation/deactivation, selecting a particular serving gateway during an initial attach of the WTRUs 102a, 102b, 102c, and the like.
  • the MME 142 may also provide a control plane function for switching between the RAN 104 and other RANs (not shown) that employ other radio technologies, such as GSM or WCDMA.
  • the serving gateway 144 may be connected to each of the eNode Bs 140a, 140b, 140c in the RAN 104 via the S1 interface.
  • the serving gateway 144 may generally route and forward user data packets to/from the WTRUs 102a, 102b, 102c.
  • the serving gateway 144 may also perform other functions, such as anchoring user planes during inter-eNode B handovers, triggering paging when downlink data is available for the WTRUs 102a, 102b, 102c, managing and storing contexts of the WTRUs 102a, 102b, 102c, and the like.
  • the serving gateway 144 may also be connected to the PDN gateway 146, which may provide the WTRUs 102a, 102b, 102c with access to packet-switched networks, such as the Internet 110, to facilitate communications between the WTRUs 102a, 102b, 102c and IP-enabled devices.
  • An access router (AR) 150 of a wireless local area network (WLAN) 155 may be in communication with the Internet 110.
  • the AR 150 may facilitate communications between APs 160a, 160b, and 160c.
  • the APs 160a, 160b, and 160c may be in communication with STAs 170a, 170b, and 170c.
  • the core network 106 may facilitate communications with other networks.
  • the core network 106 may provide the WTRUs 102a, 102b, 102c with access to circuit-switched networks, such as the PSTN 108, to facilitate communications between the WTRUs 102a, 102b, 102c and traditional land-line communications devices.
  • the core network 106 may include, or may communicate with, an IP gateway, (e.g., an IP multimedia subsystem (IMS) server), that serves as an interface between the core network 106 and the PSTN 108.
  • IMS IP multimedia subsystem
  • the core network 106 may provide the WTRUs 102a, 102b, 102c with access to the networks 112, which may include other wired or wireless networks that are owned and/or operated by other service providers.
  • the terminology “station” includes but is not limited to a wireless transmit/receive unit (WTRU), a user equipment (UE), a mobile station, a fixed or mobile subscriber unit, a pager, a cellular telephone, a personal digital assistant (PDA), a computer, a mobile internet device (MID), or any other type of device capable of operating in a wireless environment.
  • WTRU wireless transmit/receive unit
  • UE user equipment
  • PDA personal digital assistant
  • MID mobile internet device
  • base station includes but is not limited to a Node-B, a site controller, an access point (AP), or any other type of interfacing device capable of operating in a wireless environment.
  • wireless communication technologies include, but are not limited to, Worldwide Interoperability for Microwave Access (WiMAX), 802.xx, Global System for Mobile communications (GSM), Code Division Multiple Access (CDMA2000), Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), or any future technology.
  • WiMAX Worldwide Interoperability for Microwave Access
  • 802.xx Global System for Mobile communications
  • CDMA2000 Code Division Multiple Access
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • VHT WLANs with Very High Throughput (VHT) of greater than 100 Mbps on top of MAC layer may be designed to implement the embodiments described herein.
  • a VHT WLAN that implements these embodiments may also include features such as multi-user multiple-input multiple-output (MU-MIMO) techniques, new coding features, new power save features, etc.
  • MU-MIMO technology may enable simultaneous transmission to multiple STAs on the same frequency and also enable simultaneous reception from multiple STAs on the same frequency.
  • New VHT protection features for VHT packet transmission and legacy packet transmission may be implemented.
  • overlapping BSS management may be necessary because of high interference from neighboring BSSs.
  • TVWS Television White Space
  • the IEEE 802.11 High Throughput (HT) Action frames used to support the management actions for HT features may not be adequate in WLANs with VHT features.
  • New management Action frames referred to herein as "VHT Action frames”
  • VHT Action frames may be needed for extending management actions for VHT features.
  • extensions to IEEE 802.11 Action frames may be needed to support VHT features.
  • Example methods and apparatuses used to support VHT Management Actions in the form of VHT Action frames and VHT extensions to IEEE 802.11 Action frames in WLANs are described herein.
  • the VHT Action frames are in new categories or existing 802.11 categories such as DLS, Public, Spectrum Management, HT, etc.
  • the VHT Action frames if not assigned to existing 802.11 categories will be grouped under a new category called "VHT" category.
  • VHT STAs in an Infrastructure BSS, Independent BSS/Ad hoc, or Direct Link Setup scenario may send or receive VHT management action frames.
  • VHT APs may send or receive VHT management action frames as well.
  • an 802.11 Public Action frame may be a management Action frame with the Category field set to Public, that may, for example, allow an inter-BSS and AP to communicate with an unassociated-STA.
  • the transmitting STA/AP and receiving STA/AP may be associated with different BSSs, or one or both of the transmitting and receiving STAs may not be associated to a BSS.
  • the management frame of subtype "Action No ACK” may not receive an ACK frame from the recipient STA/AP on successful reception. Furthermore, these Action frames of the management frame subtype "Action No ACK” may be aggregated by an STA/AP with one or more of data frames, control frames, and management frames for transmission in an aggregated packet data unit (PDU).
  • An aggregated PDU may contain the individual frames/packets with each individual packet preceded by a packet/frame delimiter that includes information pertaining to the packet and each individual packet followed by padding bits if necessary to round up to a required length; for example a multiple of 4 Octets as in 802.11n.
  • Both management frames of the subtypes "Action” and “Action No ACK” may be referred to herein as either "Action frames” or "management Action frames.”
  • FIG 2 is a diagram of an example medium access control (MAC) frame 200.
  • the MAC frame 200 may include a preamble 210, a header 220, and a frame body 230.
  • the frame body 230 may include a VHT management Action frame body 240.
  • the VHT management Action frame body 240 may include an Action Category field 250, followed by an Action field 260.
  • the Action field 260 may identify the type of Action frame, for example, a Setup Request, a Setup Response, or a Teardown.
  • the Action field 260 may be followed by other fields 270a, 270b,... 270k.
  • the other fields 270a, 270b,... 270k may be specified based on the Action Frame type where one or more of these fields may be Information Elements (IEs).
  • IEs Information Elements
  • the AP and STAs may indicate VHT management actions, in any new or existing management/control/data frames, for example, in management frames such as Association, Reassociation, Probe or Beacon frames.
  • An IE may be included in the MAC frames to transfer information.
  • FIG 3 is a diagram of an example VHT management action frame 300 that includes an IE 310.
  • the IE 310 may include an element ID field 320, a length field 330, and a number of IE fields 340a, 340b,... 340n.
  • the element ID field 320 may contain an ID specific to the IE 310.
  • the length field 330 may indicate the length of the IE 310 following the length field 330.
  • an 802.11 Channel Switch Announcement frame may be modified to support the VHT increased channel bandwidth transmission mode of 80 MHz.
  • the Channel Switch Announcement frame may be sent by an AP in a BSS or a STA in an Independent BSS to advertise when it is switching to a new channel, the channel number and bandwidth configuration.
  • the 802.11 Channel Switch Announcement frame may be an Action frame of Category Spectrum Management which contains a Secondary Channel Offset IE.
  • FIG. 4 is a diagram of an example Secondary Channel Offset IE 400 that may be modified to indicate secondary channel offset information values to support the VHT 80 MHz bandwidth transmission and VHT Multi-channel transmission.
  • the Secondary Channel Offset IE 400 may comprise an element ID field 410, a length field 420, and a Secondary Channel Offset field 430.
  • the Secondary Channel Offset field 430 may indicate the position of the 20 MHz secondary channel relative to the 20 MHz primary channel for 40 MHZ transmission bandwidth in the existing 802.11n standard.
  • the 20 MHz channels making up the 80 MHz bandwidth need not be contiguous.
  • the VHT features may support the transmission and reception of such an 80 MHz bandwidth signal.
  • the VHT features may also support multi-channel transmissions, including multiple parallel transmissions, using various combinations of 20 MHz channels.
  • the configuration of the channels may be indicated relative to the primary channel in the Secondary Channel Offset field 430.
  • the VHT features may support a 40 MHz bandwidth signal transmission and reception where the secondary channel may not be adjacent to the primary channel, and may be indicated in the Secondary Channel Offset field 430.
  • An example of the possible secondary channel configurations and corresponding values for the Secondary Channel Offset field 430 corresponding to the VHT 80 MHz bandwidth transmission, VHT 40 MHz bandwidth transmission, and VHT Multi-channel transmission is shown in Table 1. An exact numerical value may be chosen flexibly from any unused value within the range from 0 to 255. Table 1. Secondary channel configurations.
  • Any unused value up to 256 (flexible) Indicates configuration of the position of the secondary channel relative to the primary channel where a 40 MHz bandwidth is not formed by 2 contiguous 20 MHz channels. Many such configurations are possible and each may have a value associated with it. Any unused value up to 256 (flexible) Indicates configuration of secondary channels for VHT Multi-channel transmission relative to the primary channel. Many such configurations are possible and each may have a value associated with it. Remaining up to 255 Unused/Reserved
  • the Secondary Channel Offset field 430 may be modified to include one or more values to indicate secondary channel configurations supporting VHT 80 MHz bandwidth transmission, VHT 40 MHz bandwidth transmission and VHT Multi-channel transmission.
  • the Secondary Channel Offset field 430 may be included in, for example: 1) the beacon, probe response, association response, and reassociation response frames sent by an AP or an STA in an Independent BSS; 2) a VHT Operation IE included in frames sent by an AP or an STA in an Independent BSS; 3) a Channel Switch Announcement (Action) frame sent by an AP or an STA in an Independent BSS; or 4) a VHT Capabilities IE included in frames sent by an AP or an STA.
  • a VHT Notify bandwidth configuration frame may be an Action frame of category VHT, and may be used to support the various bandwidths 20/40/80 MHz in VHT WLANs.
  • a VHT STA or AP may send the VHT Notify bandwidth configuration frame to change the bandwidth configuration of frames that are sent to it.
  • FIG. 5 is a diagram of an example VHT Notify bandwidth configuration frame 500.
  • the VHT Notify bandwidth configuration frame 500 may include a Category field 510, an Action field 520, and a VHT bandwidth configuration field 530.
  • the Category field 510 may be set to a value to indicate VHT.
  • the Action field 520 may be set to a value that represents a VHT Notify bandwidth configuration.
  • the VHT bandwidth configuration field 530 may contain a bandwidth configuration requested for frames to be sent to the STA or AP transmitting this action frame.
  • the values for the VHT bandwidth configuration field 530 may correspond to the various bandwidth configurations that are possible with VHT 80 MHz bandwidth transmission, VHT 40 MHz bandwidth transmission, and VHT multi-channel transmission.
  • the various bandwidth configurations may be provided, for example, in a modified Secondary Channel Offset IE and/or a Secondary Channel Offset field 430 described in the first example and shown in Figure 4 and Table 1, respectively.
  • an 802.11 Notify Channel Width frame of Category HT may be modified to support VHT by adding one or more of the VHT bandwidth configurations shown in Table 1 to the 802.11 Channel Width field.
  • a VHT Set Phased Coexistence Operation (PCO) Phase frame may be an Action frame of category VHT, and used to support PCO in VHT WLANs.
  • a VHT WLAN BSS may adopt a VHT PCO where the VHT AP may divide time between 20/40/80 MHz bandwidth operation. Note that all possible combinations maybe considered, for example, 20/40/80 MHz, 40/80 MHz, 20/80 MHz, and 20/40 MHz.
  • an AP may switch the BSS operation amongst a predetermined set of bandwidths for a VHT phased coexistence operation.
  • Another feature may be added to the VHT PCO where multi-channel transmission configurations, including parallel channel transmission configureations, are supported as additional PCO phases.
  • the VHT AP may indicate switching to these multi-channel transmission configurations/phases.
  • a VHT Set PCO Phase frame may be sent by an AP to announce the phase change amongst the 20 MHz, 40 MHz and 80 MHz phases.
  • FIG. 6 is a diagram of an example VHT Set PCO Phase frame 600.
  • the VHT Set PCO Phase frame 600 may include a Category field 610, an Action field 620, and a VHT PCO Phase Control field 630.
  • the Category field 610 may be set to a value to indicate VHT.
  • the Action field 620 may be set to a value defined for representing VHT Set PCO Phase.
  • the VHT PCO Phase Control field 630 may indicate a current PCO phase. This information may be indicated in a modified 802.11 PCO Phase Control field, an it may include one or more of the values as shown in Table 2. Table 2.
  • Value Description 0 Indicates 20 MHz Phase 1 Indicates 40 MHz Phase Any unused value up to 256 (flexible) Indicates 40 MHz bandwidth configuration relative to the primary channel formed by : (a) 2 contiguous or (b) 2 non-contiguous 20MHz channels- many such configurations are possible and each may have a value associated with it. Any unused value up to 256 (flexible) Indicates 80 MHz bandwidth configuration relative to the primary channel formed by 4 contiguous 20 MHz channels - many such configurations are possible and each may have a value associated with it.
  • Any unused value up to 256 (flexible) Indicates 80 MHz bandwidth configuration relative to the primary channel not formed by 4 contiguous 20 MHz channels- many such configurations are possible and each may have a value associated with it.
  • Any unused value up to 256 (flexible) Indicates VHT Multi-channel transmission configuration relative to the primary channel - many such configurations are possible and each may have a value associated with it. Remaining up to 255 Not used/Reserved
  • the VHT PCO phases may correspond to one or more of the various bandwidth configurations that may be supported in a VHT 80 MHz bandwidth transmission, a VHT 40 MHz bandwidth transmission, and a VHT multi-channel transmission, as shown in Table 2.
  • an 802.11 Set PCO Phase frame of Category HT may be modified to support VHT PCO by replacing an 802.11 PCO Phase Control field with a modified PCO Phase Control field that includes values for VHT PCO Phases as indicated in Table 2.
  • a current VHT PCO Phase of operation indication may be included in the beacon, probe response, association response, and reassociation response frames sent by the AP or an STA in an Independent BSS, or in a VHT Operation IE included in frames sent by an AP or an STA in an Independent BSS.
  • an 802.11 MIMO Control field may be modified, or a VHT MIMO Control field may be created, to include one or more of the following: 1) a number of columns for a channel state information and/or a transmit beamforming feedback matrix ranging from 1 to 32; 2) a number of rows for a channel state information/transmit beamforming feedback matrix ranging from 1 to 32; 3) a MIMO Control Channel Width indication for VHT covering various bandwidth configuration cases for 20/40/80 MHz as shown in Table 1; 4) a number of OFDM sub-carriers grouped into one or more sets of sub-carriers ranging from 1 to 16; 5) a number of bits in the representation of the real and imaginary parts of each element in the channel state information/transmit beamforming feedback matrix ranging from 4 to 16; 6) a size of the code book information for a Compressed beamforming matrix; 7) a remaining segment number ranging from 0 to 31 for segments of an associated measurement report; and 8) a sounding timestamp corresponding to an
  • the modified MIMO Control field and the VHT MIMO Control field may be included in an 802.11 HT Channel State Information (CSI) Action frame, a VHT CSI Action frame, an 802.11 HT Non-compressed Beamforming Action frame, a VHT Non-compressed Beamforming Action frame, an 802.11 HT Compressed Beamforming Action frame, or a VHT Compressed Beamforming Action frame.
  • CSI Channel State Information
  • FIG. 7 is a diagram of an example the frame body of a VHT Compressed Beamforming Report Action frame 700.
  • the VHT Compressed Beamforming Report Action frame 700 may include a Category field 710, an Action field 720, a VHT MIMO Control field 730, and a Compressed Beamforming Report 740.
  • a modified 802.11 Compressed Beamforming Report field for 20/40/80 MHz, or the Compressed Beamforming Report field 740 configured to support VHT may include one or more of the following: 1) an Average Signal to Noise Ratio of the STA sending the report for each space-time stream with a resolution that may be in a range from 8 bits to 16 bits, where a number of streams may be specified in a corresponding MIMO Control field as a number of columns in a matrix; 2) a Beamforming Feedback Matrix for OFDM sub-carriers with indices in the range -128 to 128 for 80 MHz; 3) a Beamforming Feedback Matrix for OFDM sub-carriers with indices in the range -58 to 58 for 40 MHz; and 4) a Beamforming Feedback Matrix for OFDM sub-carriers with indices in the range -28 to 28 for 20 MHz.
  • the modified 802.11 Compressed Beamforming Report field for 20/40/80 MHz and the Compressed Beamforming Report field configured to support VHT may be included in an 802.11 HT Compressed Beamforming Action frame or a VHT Compressed Beamforming Action frame.
  • the 802.11 HT Compressed Beamforming Action frame and the VHT Compressed Beamforming Action frame may be sent by an STA/AP in response to a Compressed Beamforming feedback request indication included in an HT Control field or VHT Control field of a frame received from a requesting STA/AP.
  • a modified 802.11 Non-compressed Beamforming Report field for 20/40/80 MHz, or a Non-compressed Beamforming Report field configured to supprot VHT may include one or more of the following: 1) an Average Signal to Noise Ratio of the STA sending the report for each space-time stream with a resolution that may range from 8 bits to 16 bits, where the number of streams may be specified in a corresponding MIMO Control field as a number of columns in a matrix; 2) a Beamforming Feedback Matrix for OFDM sub-carriers with indices in the range -128 to 128 for 80 MHz; 3) a Beamforming Feedback Matrix for OFDM sub-carriers with indices in the range -58 to 58 for 40 MHz; and 4) a Beamforming Feedback Matrix for OFDM sub-carriers with indices in the range -28 to 28 for 20 MHz.
  • the modified 802.11 Non-compressed Beamforming Report fields for 20/40/80 MHz and the Non-compressed Beamforming Report field configured to supprot VHT may be included in an 802.11 HT Non-compressed Beamforming Action frame or a VHT Non-compressed Beamforming Action frame.
  • the 802.11 HT Non-compressed Beamforming Action frame and the VHT Non-compressed Beamforming Action frame may be sent by an STA/AP in response to a Non-compressed Beamforming feedback request indication included in an HT Control field or a VHT Control field of a frame received from a requesting STA/AP.
  • a modified 802.11 CSI Report field for 20/40/80 MHz, or a CSI Report field configured to support VHT may include one or more of the following: 1) a Signal to Noise Ratio (SNR) for each receive chain of the STA sending the report with a resolution that may range from 8 bits up to 16 bits, where the number of receive chains may be specified in a corresponding MIMO Control field as a number of rows in a matrix; 2) a CSI Matrix for OFDM sub-carriers with indices in the range -128 to 128 for 80 MHz; 3) a CSI Matrix for OFDM sub-carriers with indices in the range -58 to 58 for 40 MHz; and 4) a CSI Matrix for OFDM sub-carriers with indices in the range -28 to 28 for 20 MHz.
  • SNR Signal to Noise Ratio
  • the modified 802.11 CSI Report field for 20/40/80 MHz and the CSI Report field configured to support VHT may be included in an 802.11 HT CSI Action frame or in a VHT CSI Action frame.
  • the 802.11 HT CSI Action frame and the VHT CSI Action frame may be sent by an STA or an AP in response to a CSI feedback request indication included in an HT Control field or VHT Control field of a frame received from a requesting STA or AP.
  • 802.11 Action frames may be modified to include a VHT Capability IE.
  • a VHT Capability IE may be added to the frame body of an 802.11 DLS Request frame,an 802.11 DLS Response frame, an 802.11 tunneled direct link setup (TDLS) Setup Request frame, and an 802.11 TDLS Setup Response frame.
  • the VHT Capabilities IE may be added by a VHT STA/AP in the 802.11 DLS Request and Response frames.
  • the VHT Capabilities IE may be added by a VHT STA in the 802.11 TDLS Setup Request and TDLS Setup Response frames.
  • a 20/40/80 BSS Coexistence Management frame may be an Action frame with a category of Public, and may be used to support the VHT increased channel bandwidth transmission mode of 80 MHz.
  • the 20/40/80 BSS Coexistence frame may be used by STAs or APs to exchange information for 20/40/80 BSS Coexistence.
  • FIG. 8 is a diagram of an example 20/40/80 BSS Coexistence Management frame 800.
  • the 20/40/80 BSS Coexistence Management frame 800 may include a Category field 810, an Action field 820, a 20/40/80 BSS Coexistence field 830, and a 20/40/80 BSS Intolerant Channel Report field 840.
  • the Category field 810 may be set to a value to indicate Public.
  • the Action field 820 may be set to a value defined for 20/40/80 BSS Coexistence Management.
  • the 20/40/80 BSS Coexistence field 830 may contain information related to 20/40/80 BSS Coexistence.
  • the 20/40/80 BSS Coexistence field 830 may contain a 20/40/80 BSS Coexistence IE 900 as shown in Figure 9 .
  • the 20/40/80 BSS Coexistence IE 900 may be used by a STA or an AP to exchange information for 20/40/80 BSS Coexistence.
  • the STA or the AP may include the 20/40/80 BSS Coexistence IE 900 in a Beacon, Probe Request, Probe Response, Association Request, Association Response, Reassociation Request, and Reassociation Response frames.
  • the 20/40/80 BSS Coexistence IE 900 may include an Element ID field 910, a length field 920, an Information Request indication field 930, a 40 MHz intolerance indication field 940, an 80 MHz intolerant indication field 950, a 20 MHz BSS width request field 960, an overlapping BSS (OBSS) scanning exemption request field 970, and an OBSS scanning exemption grant field 980.
  • the Element ID field 910 may indicate a value specifically for the 20/40/80 BSS Coexistence IE 900.
  • the Length field 920 may contain the length of the 20/40/80 BSS Coexistence IE 900 following the Length field 920.
  • the Information Request indication field 930 may be used by a transmitting STA or AP to indicate to the recipient to send a 20/40/80 BSS Coexistence Management frame 800 in response.
  • the 40 MHz Intolerant indication field 940 when set to a predetermined value, may indicate that the AP that receives or reports this information may be prohibited from operating a 20/40 MHz BSS. When this field is not set to that specifc value, it may not prohibit a receiving AP from operating as a 20/40 MHz BSS.
  • the 80 MHz Intolerant indication field 950 when set to a predetermined value, may indicate that the AP that receives or reports this information may be prohibited from operating a 20/40/80 MHz BSS. When this field is not set to that specific value, it may not prohibit a receiving AP from operating as a 20/40/80 MHz BSS.
  • the 20 MHz BSS Width Request field 960 when set to a predetermined value, may indicate that the receiving AP may be prohibited from operating as a 20/40/80 MHz BSS or a 20/40 MHz BSS.
  • the OBSS Scanning Exemption Request field 970 when set a predetermined value, may indicate that the transmitting STA requests to be exempted from OBSS scanning by the receiving AP.
  • the OBSS Scanning Exemption Grant field 980 when set a predetermined value, may indicate that the receiving STA may be exempted by the transmitting AP from performing OBSS Scanning.
  • the 20/40/80 BSS Coexistence IE 900 may be created by modifying an 802.11 20/40 BSS Coexistence element by adding an 80 MHz Intolerant field 950.
  • the 20/40/80 BSS Intolerant Channel Report 840 may contain information on channels that disallow a 20/40/80 MHz BSS operation.
  • the 20/40/80 BSS Intolerant Channel Report field 840 may contain a 20/40/80 BSS Intolerant Channel Report IE 1000 as shown in Figure 10 .
  • the 20/40/80 BSS Intolerant Channel Report IE 1000 may include an Element ID field 1010, a Length field 1020, a Regulatory Class Information field 1030, and a Channel List field 1040.
  • the Element ID field 1010 may indicate a value specifically for the 20/40/80 BSS Intolerant Channel Report IE 1000.
  • the Length field 1020 may contain the length of the 20/40/80 BSS Intolerant Channel Report IE 1000 following the Length field 1020.
  • the Regulatory Class Information field 1030 may contain information that specifies the regulatory class in which the Channel List in the Channel List field 1040 may be valid.
  • the Channel List field 1040 may contain a list of channels on which a 20/40/80 MHz BSS operation is disallowed.
  • an 802.11 Antenna Selection Indices field may be modified, or a VHT Antenna Selection Indices field may be created, to support up to 16 Antennas.
  • the 802.11 Antenna Selection Indices field may be 8 bits in length and may support only 8 antennas, where each bit in the field may be used to indicate the selection of a corresponding antenna.
  • the modified 802.11 Antenna Selection Indices field and the VHT Antenna Selection Indices field may have 16 bits, where each bit may correspond to an antenna index and may be used to indicate a selection of a corresponding antenna.
  • the modified 802.11 Antenna Selection Indices field and the VHT Antenna Selection Indices field may be included in an 802.11 HT Antenna Selection Indices Feedback Action frame or a VHT Antenna Selection Indices Feedback Action frame, and sent by an STA or an AP in response to an Antenna Selection Indices feedback request indication included in an HT Control field or a VHT Control field of a frame received from a requesting STA or AP.
  • FIG 11 is a flow diagram of an example method 1100 for supporting management actions in VHT communications.
  • a an STA/AP 1110 may transmit a management action frame 1120 to another STA2 1130.
  • the management action frame 1120 may be a VHT Action frame, and may be assigned a category and/or a subtype.
  • STA2 1130 may change an operating parameter 1140 based on a field in the management action frame 1120.
  • the assignment of category for each of the VHT Action frames may be flexible such that they may be assigned a category that is new such as "VHT" or any 802.11 category.
  • the VHT Action frames may have subtypes "Action” or “Action with ACK", and "Action No ACK.”
  • the "Action No ACK" subtype VHT Action frames may be aggregated by an STA/AP with one or more of data frames, control frames, and management frames for transmission in an aggregated packet data unit.
  • STA2 1130 may transmit an ACK 1150 if it receives a VHT Action frame of a subtype "Action.”
  • STA2 1130, or an AP may not transmit an ACK if it receives a VHT Action frame of a subtype "Action No ACK.”
  • ROM read only memory
  • RAM random access memory
  • register cache memory
  • semiconductor memory devices magnetic media such as internal hard disks and removable disks, magneto-optical media, and optical media such as CD-ROM disks, and digital versatile disks (DVDs).
  • a processor in association with software may be used to implement a radio frequency transceiver for use in a WTRU, UE, terminal, base station, RNC, or any host computer.

Claims (14)

  1. Verfahren zum Unterstützen von Management-Aktionen in Very High Throughput (VHT)-Kommunikationen, wobei das Verfahren umfasst:
    Empfangen, an einem Zugangspunkt (Access Point, AP), eines Very High Throughput (VHT) Compressed Beamforming-Frames (700) von einer Station (STA), wobei der VHT Compressed Beamforming-Frame ein Action No Acknowledgement (ACK)-Frame ist und ein VHT Multiple Input Multiple Output (MIMO) Control-Feld (730) enthält, wobei das VHT MIMO Control-Feld eine Kanalbreite angibt, die sich auf eine Mehrkanalübertragung in einem nicht-zusammenhängenden Spektrum bezieht.
  2. Verfahren nach Anspruch 1, wobei das VHT MIMO Control-Feld eine Anzahl von Spalten in einer Beamforming-Rückkopplungsmatrix angibt.
  3. Verfahren nach Anspruch 1, wobei das VHT MIMO Control-Feld eine Anzahl von Reihen in einer Beamforming-Rückkopplungsmatrix angibt.
  4. Verfahren nach Anspruch 1, wobei das VHT MIMO Control-Feld eine Bandbreitenkonfiguration angibt, die mehrere Sekundärkanäle für eine VHT-Mehrkanalübertragung relativ zu einem Primärkanal enthält.
  5. Verfahren nach Anspruch 1, wobei das VHT MIMO Control-Feld mehrere Orthogonal Frequency Division Multiplex (OFDM)-Hilfsträger enthält, wobei die OFDM-Hilfsträger in einem Satz gruppiert sind.
  6. Verfahren nach Anspruch 1, wobei das VHT MIMO Control-Feld mehrere Bits enthält, die einen realen Abschnitt und einen imaginären Abschnitt jedes Elements in einer Kanalzustandsinformation (Channel State Information, CSI) oder einer Sende-Beamforming-Rückkopplungsmatrix darstellen.
  7. Verfahren nach Anspruch 1, wobei das VHT MIMO Control-Feld eine Compressed Beamforming-Matrix-Codebuchinformationsgröße enthält und eine verbleibende Segmentanzahl eines zugehörigen Messberichts angibt.
  8. Verfahren nach Anspruch 1, wobei der VHT Compressed Beamforming-Frame ein Compressed Beamforming Report-Feld (740) enthält.
  9. Verfahren nach Anspruch 8, wobei das Compressed Beamforming Report-Feld ein durchschnittliches Signal-Rausch-Verhältnis (Signal to Noise Ratio, SNR) der STA enthält oder eine Beamforming-Rückkopplungsmatrix für mehrere Orthogonal Frequency Division Multiplex (OFDM)-Hilfsträger enthält.
  10. Verfahren nach Anspruch 1, wobei der VHT Compressed Beamforming-Frame ein VHT Secondary Channel Offset-Feld enthält, das einen Wert enthält, um Unterstützung für eine oder mehrere Sekundärkanalkonfigurationen anzugeben, die mindestens eines von Folgendem enthalten:
    eine VHT-Übertragung mit 80 MHz Bandbreite, eine VHT-Übertragung mit 20 MHz Bandbreite, und eine VHT-Übertragung mit mehreren Kanälen.
  11. Verfahren nach Anspruch 10, wobei das Secondary Channel Offset-Feld in einem Beacon-Frame, einem Sondierungsantwort-Frame, einem Verknüpfungsantwort-Frame, einem Neuverknüpfungsantwort-Frame in einem unabhängigen Basic Service Set (BSS), einer VHT Operation-IE in einem unabhängigen BSS, einem Channel Switch Announcement Action-Frame in einem unabhängigen BSS oder einer VHT Capabilities-IE enthalten ist.
  12. Verfahren nach Anspruch 1, wobei der VHT Compressed Beamforming-Frame verwendet wird, um Bandbreiten von 20 MHz, 40 MHz und 80 MHz in einem VHT Wireless Local Area Network (WLAN) zu unterstützen.
  13. Verfahren nach Anspruch 1, wobei ein VHT Notify Bandwidth Configuration-Frame ein VHT-Bandbreitenkonfigurationsfeld enthält und gesendet wird, um die Bandbreitenkonfiguration von Frames zu ändern, die an die STA gesendet werden, und wobei das VHT-Bandbreitenkonfigurationsfeld Unterstützung für mindestens eines von Folgendem angibt:
    eine VHT-Übertragung mit 80 MHz Bandbreite, eine VHT-Übertragung mit 40 MHz Bandbreite, und eine VHT-Übertragung mit mehreren Kanälen.
  14. Zugangspunkt (Access Point, AP), der so konfiguriert ist, dass er Management-Aktionen in Very High Throughput (VHT)-Kommunikationen unterstützt, wobei der AP umfasst:
    einen Empfänger, der so konfiguriert ist, dass er einen Very High Throughput (VHT) Compressed Beamforming-Frame (700) von einer Station (STA) empfängt, wobei der VHT Compressed Beamforming-Frame ein Action No Acknowledgement (ACK)-Frame ist und ein VHT Multiple Input Multiple Output (MIMO) Control-Feld (730) enthält, wobei das VHT MIMO Control-Feld eine Kanalbreite angibt, die sich auf eine Mehrkanalübertragung in einem nicht-zusammenhängenden Spektrum bezieht.
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US20180324880A1 (en) 2018-11-08
US20110116488A1 (en) 2011-05-19
EP3461203A1 (de) 2019-03-27
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US10616937B2 (en) 2020-04-07
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AU2010319452A1 (en) 2012-05-31
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